activate_node : function()

in optaplanner-docs/src/modules/ROOT/images/website/jstree/jstree.js [3115:3181]
56 lines of code
33 McCabe index (conditional complexity)

		activate_node : function (obj, e) {
			if(this.is_disabled(obj)) {
				return false;
			}
			if(!e || typeof e !== 'object') {
				e = {};
			}

			// ensure last_clicked is still in the DOM, make it fresh (maybe it was moved?) and make sure it is still selected, if not - make last_clicked the last selected node
			this._data.core.last_clicked = this._data.core.last_clicked && this._data.core.last_clicked.id !== undefined ? this.get_node(this._data.core.last_clicked.id) : null;
			if(this._data.core.last_clicked && !this._data.core.last_clicked.state.selected) { this._data.core.last_clicked = null; }
			if(!this._data.core.last_clicked && this._data.core.selected.length) { this._data.core.last_clicked = this.get_node(this._data.core.selected[this._data.core.selected.length - 1]); }

			if(!this.settings.core.multiple || (!e.metaKey && !e.ctrlKey && !e.shiftKey) || (e.shiftKey && (!this._data.core.last_clicked || !this.get_parent(obj) || this.get_parent(obj) !== this._data.core.last_clicked.parent ) )) {
				if(!this.settings.core.multiple && (e.metaKey || e.ctrlKey || e.shiftKey) && this.is_selected(obj)) {
					this.deselect_node(obj, false, e);
				}
				else {
					this.deselect_all(true);
					this.select_node(obj, false, false, e);
					this._data.core.last_clicked = this.get_node(obj);
				}
			}
			else {
				if(e.shiftKey) {
					var o = this.get_node(obj).id,
						l = this._data.core.last_clicked.id,
						p = this.get_node(this._data.core.last_clicked.parent).children,
						c = false,
						i, j;
					for(i = 0, j = p.length; i < j; i += 1) {
						// separate IFs work whem o and l are the same
						if(p[i] === o) {
							c = !c;
						}
						if(p[i] === l) {
							c = !c;
						}
						if(!this.is_disabled(p[i]) && (c || p[i] === o || p[i] === l)) {
							if (!this.is_hidden(p[i])) {
								this.select_node(p[i], true, false, e);
							}
						}
						else {
							this.deselect_node(p[i], true, e);
						}
					}
					this.trigger('changed', { 'action' : 'select_node', 'node' : this.get_node(obj), 'selected' : this._data.core.selected, 'event' : e });
				}
				else {
					if(!this.is_selected(obj)) {
						this.select_node(obj, false, false, e);
					}
					else {
						this.deselect_node(obj, false, e);
					}
				}
			}
			/**
			 * triggered when an node is clicked or intercated with by the user
			 * @event
			 * @name activate_node.jstree
			 * @param {Object} node
			 * @param {Object} event the ooriginal event (if any) which triggered the call (may be an empty object)
			 */
			this.trigger('activate_node', { 'node' : this.get_node(obj), 'event' : e });
		},